Only connect with static IP if GW is configured (#362)

wled00/wled00.ino

@@ -99,7 +99,7 @@
 
 
 //version code in format yymmddb (b = daily build)
-#define VERSION 1911201
+#define VERSION 1911211
 char versionString[] = "0.8.7-dev";
 
 

wled00/wled05_init.ino

@@ -152,7 +152,7 @@ void initConnection()
 {
   WiFi.disconnect(); //close old connections
 
-  if (staticIP[0] != 0)
+  if (staticIP[0] != 0 && staticGateway[0] != 0)
   {
     WiFi.config(staticIP, staticGateway, staticSubnet, IPAddress(8,8,8,8));
   } else